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OmniWeb IDN Spoofing Security Issue
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Secunia Advisory:
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SA14166
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Release Date:
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2005-02-07
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Last Update:
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2005-07-25
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Popularity:
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17,048 views
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Critical:
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Moderately critical
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Impact:
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Spoofing
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | OmniWeb 5.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| | CVE reference: | CVE-2005-0236
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Description:
Eric Johanson has reported a security issue in OmniWeb, which can be exploited by a malicious web site to spoof the URL displayed in the address bar, SSL certificate, and status bar.
The problem is caused due to an unintended result of the IDN (International Domain Name) implementation, which allows using international characters in domain names.
This can be exploited by registering domain names with certain international characters that resembles other commonly used characters, thereby causing the user to believe they are on a trusted site.
Secunia has constructed a test, which can be used to check if your browser is affected by this issue:
http://secunia.com/multiple_browsers_idn_spoofing_test/
The issue has been confirmed in OmniWeb versions 5.1. Other versions may also be affected.
Solution:
Update to version 5.1.1.
Provided and/or discovered by:
Originally described by:
Evgeniy Gabrilovich and Alex Gontmakher
Reported by:
Eric Johanson
Changelog:
2005-02-10: Added CVE reference.
2005-07-25: Updated "Solution" section.
Original Advisory:
http://www.shmoo.com/idn/homograph.txt
Other References:
The Homograph Attack:
http://www.cs.technion.ac.il/~gabr/papers/homograph.html
ICANN paper on IDN Permissible Code Point Problems:
http://www.icann.org/committees/idn/idn-codepoint-paper.htm
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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